Proton Drive is perhaps one of the most secure cloud storage services out there right now. It keeps encryption, security, and privacy as a top priority, making it a promising alternative to Google Drive and Microsoft OneDrive. However, it still doesn't have the cross-platform sync support found in some competitors. That's now improving, as Proton Drive now has a Mac app.
Proton Drive was already available on Windows computers, with features such as synchronization for your offline files, but Mac users were limited to the web version, which has some features but not everything. This meant that, for one, if you had any files you wanted to back up to the platform, you'd have to manually upload them. Now, though, with the launch of Proton Drive on macOS, you have the full experience.
Pretty much everything you could do on the web version, you can currently do it on the new macOS app, but perhaps the main reason why you might want to use a desktop client over the web version is support for synchronization. You can synchronize your files and folders with Proton Drive and ensure that they're all safe and encrypted. You also get a bunch of other features, such as end-to-end encryption for all your files (ensuring that not even Proton itself can access your files at any given moment) and a version history.
Furthermore, you can access your files even when you're offline, allowing you to edit and access them without an internet connection. Proton Drive will keep track of all changes to these files and, when you do get access to an Internet connection, these changes will be synced to the cloud in the same encrypted environment as usual. That's common functionality for other cloud storage services, but most of them don't have the same end-to-end encryption as Proton's service.
The launch of Proton Drive on macOS was well overdue, but it's better late than never. If you're a Mac user and you've been looking for a new cloud storage service, you can download it now. Unfortunately, we're still waiting on a native Linux sync application—hopefully it won't take as long as the promised Google Drive for Linux.
Source: Proton